I wiped my hard drive and installed a fresh copy of Hardy and this is
mostly working for me now. I also switched from a manual network
configuration to a roaming profile using the NetworkManager. Anyway, the
network does eventually get going but it can take anywhere from 30
seconds to over 5 minutes for the NetworkManager to find my network.

However I noticed that if the network hadn't started after a couple
minutes then executing a "sudo iwlist scanning" a few times from the
command line until my home network is found will cause the networking to
be configured right after that.  It seems similar to this issue
https://bugs.launchpad.net/ubuntu/feisty/+source/network-
manager/+bug/40125/comments/56

I also found that going into my linksys router settings and enabling the
"Wireless SSID Broadcast" (I previously had it disabled) has cut the
network startup time down to a consistent 30-45 seconds after resume.
Although I can also execute a "sudo iwlist scanning" and get it going in
only a few seconds instead of waiting the 30-45 seconds.

-- 
"link is not ready" when resuming from suspend with ipw3945 
https://bugs.launchpad.net/bugs/154194
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